机电工程技术2024，Vol.53Issue(8)：167-171,5.DOI:10.3969/j.issn.1009-9492.2024.08.036
高精度五轴龙门数控加工中心综合误差建模与辨识
Comprehensive Error Modeling and Identification of High Precision Five-axis Gantry CNC Machining Center
摘要
Abstract
Aiming at the problem of multi-class fusion errors affecting machining accuracy of five-axis CNC machine tools,a comprehensive error model based on error coupling is proposed.From the angle of error source,the main factors affecting the machining accuracy of machine tools are analyzed,the influence of different errors are explored on the machining accuracy of machine tools.On this basis,the topological structure and low sequence array of the target machine tool are established,and the homogeneous coordinate transformation matrix of synthetic error under ideal and actual state based on the theory of multi-body system is completed.The synthetic error model of the target machine tool is established,and the correctness of the synthetic error model is verified.A method of interpolation before fitting is proposed to complete the fitting of the errors of five-axis CNC machine tools.Experimental results show that the proposed method can effectively process the data with large error fluctuation,and the fitting deviation is reduced by 3.04%,which improves the accuracy of the comprehensive error model of five-axis CNC machine tools.关键词
五轴数控机床/多体系统/误差拟合/综合误差模型Key words
five-axis CNC machine/multi-body system/error fitting/synthetic error model分类
矿业与冶金引用本文复制引用
王柱,万思成,田嘉杰,周振财,王小东,王天雷,周智恒,罗键熙..高精度五轴龙门数控加工中心综合误差建模与辨识[J].机电工程技术,2024,53(8):167-171,5.基金项目
江门市科技计划(2021080200070009151) （2021080200070009151）
江门市科技计划项目(2022JC01021) （2022JC01021）
江门市省科技创新战略专项(揭榜挂帅)(20220166003240) （揭榜挂帅）
江门市科技特派员科研合作项目(2023760300180008278) （2023760300180008278）
江门市扶持科技发展资金项目(江科(2023)117号2320002000601) （江科(2023）
